UPDATED at 2:02 p.m.
Investigators are working to determine what sparked a fire this afternoon inside a detached outbuilding on property just outside the Tacoma city limits.
They were also looking into what appeared to be a marijuana grow operation that was found inside the small building, Central Pierce Fire & Rescue Assistant Chief Randy Stephens said. A Pierce County sheriff’s deputy found paperwork authorizing the small grow operation and was looking into its legitimacy.
A neighbor spotted smoke coming from the building and called Central Pierce firefighters about 12:45 p.m.
Crews were dispatched to the 9900 block of Patterson …